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    A novel dual view capsule endoscopic (DVCE) lens offers physicians a wider viewing angle. This hybrid lens provides front and back views, improving lesion detection in endoscopic procedures.

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    Area of Science:

    • Medical Devices
    • Optical Engineering
    • Gastroenterology

    Background:

    • Capsule endoscopy is crucial for gastrointestinal diagnostics.
    • Limitations exist in current capsule lenses regarding field of view and imaging capabilities.
    • Enhanced visualization is needed for comprehensive lesion detection.

    Purpose of the Study:

    • To propose and evaluate a novel dual view capsule endoscopic (DVCE) lens.
    • To integrate front and back viewing functions into a single capsule lens.
    • To assess the optical performance and diagnostic potential of the DVCE lens.

    Main Methods:

    • Design of a hybrid lens incorporating a catadioptric mirror and an aspherical surface.
    • Optical performance analysis including field of view (FOV), distortion, illumination, and Modulation Transfer Function (MTF).
    • Evaluation of telecentric conditions for consistent magnification and reduced measurement error.

    Main Results:

    • The DVCE lens achieves a 90-degree FOV for the front view and 260-290 degrees for the back view.
    • TV distortion is below 30% (front) and 25% (back).
    • Corner relative illumination exceeds 0.53, and MTF performance remains above 0.35 (or 0.2 under tolerance).

    Conclusions:

    • The proposed DVCE lens successfully integrates dual viewing capabilities.
    • The lens design offers a wide viewing angle and robust optical performance.
    • This technology has the potential to enhance lesion detection and improve diagnostic accuracy in capsule endoscopy.